"But .....
Q: when man lost the dominion of the earth, who gained it?
A: Evidently the one to whom he yielded obedience.
Peter says that, "of whom a man is overcome, of the same is he 
brought in bondage." 2 Peter 2:19.
And Jesus said: "When a strong man armed keepeth his palace, his goods are in peace; but when a stronger than he shall come upon him, and overcome him, he taketh from him all his armor wherein he trusted, and divideth his spoils." Luke 11:21, 22.
---Our first parents were overcome by the serpent, "which is the devil, and Satan" (Rev. 20:2), and therefore it was to Satan that they yielded up the dominion which had been committed to them,
That Satan is now the ruler of this earth,
instead of man,
is shown by the Scriptures.
@ In 2 Cor. 4:4, Satan is spoken of as "the god of this world."
Christ said that the wicked are children of Satan (John 8:44);
and in Eph. 2:2, "the spirit that now worketh in the children of disobedience," is called "the prince of the power of the air."
Satan is "the accuser of the brethren," and Paul says that "we wrestle not against flesh and blood, but against principalities, against powers, against the rulers of the darkness of this world." Eph. 6:12." E.J. Waggoner